I use IntelliJ for Java. There's nothing to touch it. What bugs me is that every year or so they change things around and you have to figure out how everything

I use IntelliJ for Java. There's nothing to touch it. What bugs me is that every year or so they change things around and you have to figure out how everything works again, or they discontinued support for a plugin for a particular version of a VCS you were using ... (no I'm not bitter ;) But I use Emacs for everything else. Emacs never changes how things are done. It can't do Java the way I'm used to doing it though. It took me a whole heap of work to get competency to a level I was actually productive with though, so I can appreciate why it's a tough sell. Worth it though IMO. Though I pity the person who has to pair program with me!